Circuit-controlling device for steam generators



July 8, 1930. 7 1,770,255

CIRCUIT coNTRoLLING 'DEvrcEvroR STEAM GENEMTORS- A. SHAPIRO Filed Dec. e, 1927 zgra kam 672 INVENTOR L BY W dp m A ORNEY Patented July 8, 1930 UNITED STATES ABRAHAM sHAPIRo, 'or BROOKLYN, NEW Yoax CIRCUIT-CONTROLLING DEVICE FOR STEAM GENEBATORS Application led December This invention relates generally to heating devices, and has more particular reference to a` novel circuit controlling device therefor.

This invention has for an object the provision of an electric device capable of generating hot water and steam for the heating of radiators or thelike and provided with the circuit controllin means.

Another object of t e invention is the provision of an electric device of simple eflicient construction,.which can be manufactured and sold at a reasonable cost.

For further comprehension of the invention and of the objects and advantages thereof, reference will'be had to the following description and' accompanying drawings and to the appended claims in which the various novel features of the invention are more p articularly set forth.

Referring to the accompanying drawing forming a. material part of this disclosure:

Fig. 1 vis a fragmentary perspective lview of a room having the invention installed therein.

Fig. 2 is a central sectional view taken on theline 2-2 in Fig. 1.

Fig. 3 is a horizontal sectional view, taken on the line 3 ic wiring di'agram has been added.

Fig. 4 is a view similar to Fig. 2 but illustrating a modified form of lsteam .generator provided with the same invention.

Fig. 5 is a horizontal sectional view, taken on the line 5-5 of Fig. 4.

Fig. 6 is a fragmentary vertical sectional view, taken on the line 6-6 of Fig. 5.

The reference numeral 10 indicates the floor, and 11 the walls' of a room having customary steam radiators 12. A base 13 rests on the iloor 10 and supports a heat insulating member 14 and a boiler 15 thereon. Pipes 16 starting at the top or steam portion of the generator connect with the radiators. A water injector pipe 17 leads water 18 within the generator. The generator is provided with a safety valve 50, a steam pressure gauge 51, and a Water level indicating tube 52.

A plurality of electrical heating coils 19 50 projecting from a lplatform 20 are electri- 3 of Fig. 2, to which a schematl 6, 1927. serial No. 238,063.

cally connected by wires 21 to a power transformer, 53, the primary of which connects to a variable rheostat 54, a switch 55, and leads 56 to some source of current.

The modified form of steam generator illustrated in Figs. 4 and 5 discloses the gen-- erator 15 provided with supporting feet 22 and a circularheating unit`23 therein. The

boiler is split and fastened together at 24.

The wires 25 connect the heating unit to some source of current.

A rod 26 is pivotally mounted at its upper end to the top of each of the steam gener-l ators, as at 27, and a spring 28 normally urges the rod into vertical position against ythe stop 29 from the boiler. The rod 26 has a longitudinal dove-tailed groove 30 with serrations 31 at its base, and slides 32 and 33 engage in'the groove. Each of these slides has extensions 34 threadedly engaged by screws 35 abuttable against the serrations 31 to hold the slides as set. Slide 32 has a pair of contacts 36 connected by wires, 37 to a high water alarm device, or the like, not shown in the drawing, so that the height of water 18 may be maintainedv below the high water mark. Likewise, slide 33 has a pair of contacts 38 connected by wires 39 to a low water alarm device, or the like, not shown on the drawing, so that the height of water 18 may be maintained above the low water mark. When the top of either generator is removed, the rod 26 may be swung to one side against the action of spring 28 allowing more room for the adjustment ofthe slides 32 and 33. The operation of the device consists/mien ergizing the heating coils to heat the water 18, producing steam which flows through pipes 16 to the radiators 12.

While I have illustrated and described the preferred form, construction and arrangement of the several elements employed, itv

. will be understood that the device is neverclaimed. A

Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent is:

1. In an electricall heated steam generator, a boiler arrange for electrically generating steam, and having a removable top, a rod pivotally mounted Within the boiler at its upper end and on the top of the'boiler and extending down to near the bottom of the boiler, and arranged for supporting a circuit closing means, a stop projecting from the said boiler top, and a spring urging the said rod against the stop for normally holding the rod in a vertical position, and permmng said rod to be swung to one side against the action of the Spring for providing more room for the adjustment of a cirnuit closing means supported by the said rod.

2. In an electrically heated steam generator, a boiler arranged for electrically gen erating steam, and having a removable top, a rod pivotally mounted within the boiler at its upper end and on the top of the boiler and extending down to near the bottom of A the boiler, and arranged for supporting a. circuit closing means, and means' for normally holding the rod in a. vertical position, and permitting said rod to be swung to one side for providing more room for the adjustment of a circuit closing means supported by the said rod.

In testimony whereof I have aixed my signature.

ABRAHAM SHAPIRO. 

